SIST EN 60371-3-7:1998/A1:2007

SIST EN 60371-3-7:1998/A1:2007 is the Slovenian adoption of amendment A1 to EN 60371-3-7, published by SIST. It specifies polyester film mica paper with an epoxy resin binder for single conductor taping, as part of the mica-based insulating materials series. Engineers, buyers and test labs use it to identify the material, order the right type, and check the key physical and electrical requirements.

What does SIST EN 60371-3-7:1998/A1:2007 specify?

SIST EN 60371-3-7:1998/A1:2007 is a sheet in Part 3 of the IEC 60371 series for insulating materials based on mica. It covers one individual material: polyester film mica paper with an epoxy resin binder for single conductor taping.

The amendment organizes the document through clauses 1 to 6 and Annex ZA. Table 1 is central because it links composition and tolerances to the product type.

What are the key requirements of SIST EN 60371-3-7:1998/A1:2007?

SIST EN 60371-3-7:1998/A1:2007 ties the product to linked material and test standards, then defines how to identify, test and classify the material. In practice, this is the document you use when you need a named mica-paper/PET laminate for electrical insulation and want a repeatable ordering and verification basis.

Ordering and identification

Clause 3 says that orders only need the specification and type numbers. The type number is built from the sheet number, the table number and the product number, so procurement can point to one exact material rather than a vague description.

Base materials

Clause 4.1 requires the mica paper to comply with IEC 60371-3-2. Clause 4.2 requires the backing film to be PET and to comply with IEC 60674-3-2. That matters because the finished tape depends on both the mica paper and the film meeting their own product specifications.

Composition and tolerances

Clause 5 says the product composition shall fall within the limits in Table 1 when tested by the method of Clause 7 of IEC 60371-2. For users, that means the mix of layers and related tolerances are not left to interpretation.

Thickness, stiffness, electric strength and tensile strength

Clause 6.3 requires thickness to be measured by Clause 4 of IEC 60371-2, using the apparatus in 4.1.1 and taking 10 measurements. Clause 6.7 points to the Clause 11 method of IEC 60371-2 when stiffness is specified.

Clause 6.8 requires electric strength testing by Clause 16 of IEC 60371-2 with electrodes according to IEC 60243-1. Clause 6.9 sets separate tensile-strength requirements for the film grades named in the document, so the buyer or lab must check the correct grade before acceptance.

Safe use

Clause 1 adds a safety warning for the methods used or referenced in the standard. In practice, users are expected to apply the test methods safely in their own laboratory or plant procedures.

What terms does SIST EN 60371-3-7:1998/A1:2007 define?

SIST EN 60371-3-7:1998/A1:2007 relies on a small set of practical terms that matter during ordering and testing.

• Polyethylene terephthalate (PET) - the plastic film material required for the backing layer.
• Mica paper - the mica-based insulating layer that must meet IEC 60371-3-2.
• Single conductor taping - the intended use of the material for wrapping or insulating one conductor.
• Type number - the ordering code built from the sheet, table and product numbers.
• Electric strength - the material’s ability to withstand electrical stress during the test method.
• Tensile strength - the force-related property used to judge whether the film meets the specified pull resistance.
• Stiffness - the resistance to bending, measured only when the property is specified.

Who uses SIST EN 60371-3-7:1998/A1:2007?

SIST EN 60371-3-7:1998/A1:2007 is used by manufacturers of mica-based insulating materials, electrical equipment designers, purchasing teams and test laboratories. They use it to specify the laminate, verify incoming or outgoing goods, and document compliance with the required material and test conditions. It is also relevant in quality control where the correct type number and linked test methods must be recorded.

What changed in SIST EN 60371-3-7:1998/A1:2007 from the previous edition?

SIST EN 60371-3-7:1998/A1:2007 is amendment A1 to EN 60371-3-7:1995. It updates the foreword, introduction, scope safety warning, normative references, designation rules, and the text of clauses 4.1, 4.2, 5, 6.3, 6.7, 6.8 and 6.9. Annex ZA is replaced.

Which standards are used with SIST EN 60371-3-7:1998/A1:2007?

• IEC 60243-1 - provides the electrode arrangement used for electric strength testing.
• IEC 60371-2 - provides the test methods used for composition, thickness, stiffness, electric strength and tensile strength.
• IEC 60371-3-2 - gives the requirements for mica paper.
• IEC 60674-3-2 - gives the requirements for balanced biaxially oriented PET films used for electrical insulation.
• IEC 60371-1 - gives the definitions and general requirements for the mica-based insulating materials series.
• IEC 60371-3 - is the series part for specifications for individual materials.

What does the SIST EN 60371-3-7:1998/A1:2007 document contain?

The document contains the amendment text that revises the sheet specification, plus Annex ZA for reference mapping. It includes the ordering designation rule, the composition requirement linked to Table 1, and the test-related clauses for thickness, stiffness, electric strength and tensile strength. For users, the document acts as the technical bridge between product specification, test method and acceptance decision.